Paper cutting looks very easy, it may be difficult to do.
There is ________"m" and ________"u" in the word "mouth".
—Lucy, can I borrow your bike? — I didn’t hear clearly.
—How do you usually go to school? —I take a bus, but I walking now.
—I’m sorry to hear that your pet dog has died. —Though my dog for three months, I still miss him.
—China is getting better and better at making high technology products.—That’s right. People around the world can hardly avoid ________ products made in China.